45.相較於汞齊,後牙複合樹脂之彈性模數(modulus of elastici..-阿摩線上測驗
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2F Ke-Shen 高二下 (2021/07/04)
The following features of present, direct posterior (Class I , II , amd IV) composites are considered disadvantaged (compared with dental amalgum) , some more so than others: 1. Very technique sensitive 2. Higher coefficient of thermal expansion than tooth structure 3. Low modulus of elasticity 4. Biocompatibility of some components unknown 5. Limited wear resistance in high‐stress areas 樹脂相對amalgum的缺點: 技術敏感、高熱膨脹、低彈性係數(彈性好)、生物相容問題、抗摩擦力弱 |